Hi

When I upgraded to Vegas 15 I started getting Green frames on HD video where I used Twixter Vr 6 so I then upgraded to Vr 7 and this cured it. I have now just moved over to 4K editing and the problem is back where ever I use Twixter and render as UHD I get flashing green frames sometimes showing on the timeline but there a lot when I render out MPEG4 4K, but which is still ok if I render my 4K footage out as just HD.

Not what I expect with two pieces of pro software and cant work out if its a Vegas or a Twixter issue or how to get around it. There is always a couple of plugins used alongside Twixter.

I contacted Vision Effects Tech Support  who came back with this:

Green frame means not enough GPU VRAM.
So resolution of video have an impact on that, as well as running in 8bit versus 32b project, as well as using something else before (even a codec) that uses the GPU.
One thing to try: In Options|Preferences - set Maximum number of rendering threads to a smaller number - even 1. This is used by Vegas to launch simultaneous frame renders so will possibly create a lot more VRAM usage at a given time.

Pierre
My PC Spec

Operating System
    Windows 10 Pro 64-bit
CPU
    Intel Core i7 3930K @ 3.20GHz    72 °C
    Sandy Bridge-E 32nm Technology
RAM
    32.0GB DDR3 @ 673MHz (9-9-9-24)
Motherboard
    ASUSTeK COMPUTER INC. P9X79 (LGA2011)    34 °C
Graphics
       2047MB NVIDIA GeForce GTX 660 Ti (EVGA)    59 °C
Storage
    2794GB Seagate ST33000651AS (SATA )    31 °C
    5589GB TOSHIBA HDWE160 (SATA )    28 °C
    2794GB Seagate ST3000DM001-9YN166 (SATA )    29 °C
    5589GB TOSHIBA HDWE160 (SATA )    28 °C
    232GB Crucial CT250MX500SSD1 (SATA (SSD))
    3726GB Seagate Expansion Desk USB Device (USB (SATA) )    47 °C
Optical Drives
    HL-DT-ST BD-RE BH16NS40
    ASUS BW-12B1LT
Audio
    ASUS Xonar DX Audio Device