I agree with Vegas_Sebastian. What driver version are you using? 20.3.1 is the newest. I am running a XFX Radeon VII and I am using the Pro drivers 20.Q1.1 for the last few weeks I have not had any problems. The older drivers pre 20.2.2 would crash my system when viewing 4K content ( not in vegas ) from my Sony AX 700.

If you install the newest drivers Pro or Radeon. Get DDU from online its free. And it will uninstall your old drivers in safe mode. Make sure in DDU options you have checked do not let windows update video drivers. AMD also makes a uninstall driver program. DDU is real easy to use.

If you are running a AMD CPU, depending on what chipset you are using, AMD just released a new chipset driver Revision Number: 2.03.12.0657. I have installed it with no problems.

Also make sure Windows is up to date.

Thanks for the responses ! i will try that driver, This is a new build .. Ryzen 9 3900x + RX 5700 + 64GB of ram ..latest windows... right now i'm running AMD drivers 20.2.2...i think i've already installed 20.3 when i first install everything a few days ago...but i'll give them a try again and i'll report back. Thanks!

I have exactly the same problem using PIP and GPU acceleration enabled with RX 5600 XT, latest build of Vegas Pro (452) and latest stable Radeon drivers (20.5.1). It's nearly 3 months since ZigoH's post. Did you get a resolution? I'm wondering where the problem lies, is it a VegasCreativeSoftware bug or an AMD bug?

Vegas 18 came out, this bug still persist. It weird that its not addressed since its a very popular GPU.

Problem confirmed here too on my machine with a 5700xt that has the latest and greatest v20.8.1 driver released 7/29. Other machines here running the same driver on other amd boards like the Radeon 7, Vega 64, and Vega-M do not experience the issue.

Doesn't seem to be a driver issue... more like a bug in the pip-fx masking. Here's a workaround using the bezier mask fx which does not have the bug. Btw, did this on Vegas 18 with an h.265 4k video so it's also a work around if track motion and pan/crop are blowing up on you.

I'm still running Vegas 17 but have discovered that if I set Dynamic Ram Preview to zero and then re-enable GPU acceleration the bug disappears.

I'm still running Vegas 17 but have discovered that if I set Dynamic Ram Preview to zero and then re-enable GPU acceleration the bug disappears.

That's not working for me, if i disable gpu acceleration everything works regardless of the dynamic ram setting, when i enable gpu accel. and restart Vegas it doesn't work again.

PIP in general has issues. I've seen it, combined with other some other fx cause lockups and other forms of screen corruption and I'm using Nvidia. Which is a shame because it's a useful tool.

You're wasting your time here.
Because a lot of people ask about the RX5700 and then talk about GPUs that have nothing to do with it, or they don't have an RX5700 and then talk about it in their imagination!

I have an RX5700 and I'm having the same problem.

Send a message to the support center!

https://www.vegascreativesoftware.info/us/support/search/?searchphrase=bug

As a countermeasure until the bug is fixed.

Use Smart Zoom and Track motion to replace PiP

The rest can be substituted by using fade in, fade out, etc. as appropriate.

In case you're wondering, I had this RX5700 issue on June 3.
I reported it to MAGIX support.

But it hasn't improved yet.
 

After reporting the problem
I received a message from MAGIX support saying that they will contact me if the bug is fixed or if there is any new information, but I haven't heard from them even after 4 months.

More people should send messages to MAGIX support and
I think we need to get MAGIX to recognize the problem and make it better.

Writing on the forum won't solve anything.

VEGAS Support.