Certain plugins, but not all, benefit from GPU Acceleration of Video Processing. If your graphics driver is updated, and you are not getting white screen crashes, I suggest you leave it on.

I have tracked the overall discussion over Dynamic RAM Preview over the past 5 years, and the generalized random results reported, along with the fervent endorsement by a minority of users is consistent with a large-scale placebo effect, a perspective that was gained as a result of my Ed. Psych minor in college. I have to stress that no quantitative testing has been done, maybe as a result of such a large scatter plot. The good news is that it apparently does no harm, except to divert some RAM buffers to slower scratch drive reserve, so If adjusting it works for you, by all means have a blast!

To your question, with your astute reservations, the answer is inarguably to invest in the fastest, most powerful CPU Processor you can afford. That's an 80-20 argument against a fa$ter GPU, by all current observations. This does not mean the most cores/threads, as only the x265/ HEVC Encoders actually benefit from >8 logical processors.

Hope this aids your inquiry, and do take advantage of other's impressions, as they all are just that.

Thank you for your response. I basically use Vegas pro by switching "GPU Acceleration of Video Processing" and "Dynamic RAM preview max" On & Off from time to time depending on the number of software crashes I face. My software actually crashes frequently with these settings On. I think my exact query still remains unanswered as I want to know a way to stop the software crashes with these settings On.

Which driverversion exactly do you use for the Nvidia?

@itsMohak Try setting dynamic ram preview to 0.

MooI think my exact query still remains unanswered as I want to know a way to stop the software crashes with these settings On.

And the exact answer for now seems to be compatible drivers or a new card. Sorry you didn't connect with the implicit suggestion. A forum Search will reveal the cards and drivers people think are best, as well as a number of posts relating to issues with gtx1070 and Vegas 15/16, which are no longer updated.

You are also welcome to download the Vegas 17 trial for a test drive. Good luck.

Which driverversion exactly do you use for the Nvidia?

@j-v I use 442.19. It's from February, 2020. Not the latest but still updated enough. Thank you so much for responding btw. I found a satisfactory solution which you can find in this thread here.

Certain plugins, but not all, benefit from GPU Acceleration of Video Processing. If your graphics driver is updated, and you are not getting white screen crashes, I suggest you leave it on.

I have tracked the overall discussion over Dynamic RAM Preview over the past 5 years, and the generalized random results reported, along with the fervent endorsement by a minority of users is consistent with a large-scale placebo effect, a perspective that was gained as a result of my Ed. Psych minor in college. I have to stress that no quantitative testing has been done, maybe as a result of such a large scatter plot. The good news is that it apparently does no harm, except to divert some RAM buffers to slower scratch drive reserve, so If adjusting it works for you, by all means have a blast!

To your question, with your astute reservations, the answer is inarguably to invest in the fastest, most powerful CPU Processor you can afford. That's an 80-20 argument against a fa$ter GPU, by all current observations. This does not mean the most cores/threads, as only the x265/ HEVC Encoders actually benefit from >8 logical processors.

Hope this aids your inquiry, and do take advantage of other's impressions, as they all are just that.

MooI think my exact query still remains unanswered as I want to know a way to stop the software crashes with these settings On.

And the exact answer for now seems to be compatible drivers or a new card. Sorry you didn't connect with the implicit suggestion. A forum Search will reveal the cards and drivers people think are best, as well as a number of posts relating to issues with gtx1070 and Vegas 15/16, which are no longer updated.

You are also welcome to download the Vegas 17 trial for a test drive. Good luck.

Thank you for your insight into the GPU Acceleration feature of Vegas Pro & nice quick responses. I was able to find a satisfactory solution which you can find in this thread. @Musicvid

I found a satisfactory solution which you can find in this thread here.

I saw it.

My best experience is on laptop with few RAM the DRAM set to 0, on desktop with more RAM the default value of 200 gives the fastest viewing and rendering.

@itsMohak Try setting dynamic ram preview to 0.

I did a quick experiment & hopefully the Rough results I found are correct. Thank you so very much for guiding me in the right direction @JN- . Treating both the settings of "GPU Acceleration of Video Processing" and "Dynamic RAM preview max" separately was the key here.

GPU Acceleration of Video Processing - GPUA

Dynamic RAM preview max - DRAM

GPUA: On & DRAM: set to non-zero value, say 4096 MB

Vegas Pro works at maximum possible speeds in terms of both rendering & preview but tends to crash frequently for me.

GPUA: On & DRAM: 0

Vegas Pro works at fast speed, but not maximum, in terms of both rendering & preview. It has not crashed in my experiment. Seems to be stable

GPUA: Off & DRAM: 0

Vegas Pro works at slow speed in terms of both rendering & preview. Very Stable

As you can see, the second section is good enough setting for using Vegas Pro for me. I can even switch to first section while rendering, if I need. It's a satisfactory solution. I will mark this as solved & solution for now. Again, thanks to @JN- for directing me to the right path. I will get back to the forum if I have any new updates or issues.

I have been unable to verify your results in months of similar tests, yet I have an Intel GPU. Again, no quantitative testing has been offered, only anecdotes, and the bulk of data suggests highly personalized, randomized results, with no particular trend favoring more or less dynamic preview RAM (not DRAM, which is a physical chip).

That said, I congratulate you on finding a personal solution that is gratifying; however, i would not go so far as projecting or generalizing your impressions to include other users, as a search will reveal multiple marathon threads with no apparent consensus, nor endorsement at the developer level by any of the Vegas brandholders over the past two decades.

We know well that the observer and his expectations are always part of the equation, and their importance in video encoding cannot be ruled out, if only at the individual level. As with the unvetted notion of 10 bit grading of 8 bit output, it shall always reside at the dark core of internet alchemy. Just my opinion, of course.

Best.