POVR Originals 
WankzVR 
MilfVR 
Reality Lovers 
RealJamVR 
Lethal Hardcore VR 
Virtual Real Porn 
VRHush 
Swallowbay 
TmwVRnet 
Only3xVR 
No2StudioVR 
VRLatina 
Deepinsex 8K
Warning: This site contains sexually explicit material and is intended solely for adults only!
If you are under the age of 18 years, or under the age of majority in the location from where you are accessing this website you do not have authorization or permission to enter this website or access any of its materials. If you are over the age of 18 years or over the age of majority in the location from where you are accessing this website by entering the website you hereby agree to comply with all the terms and conditions. You also acknowledge and agree that you are not offended by nudity and explicit depictions of sexual activity. By clicking on the "Enter" button, and by entering this website you agree with all the above and certify under penalty of perjury that you are an adult.
Even with a set bitrate, the encoding process has a lot of variance. So those sizes are all a result of the encoder trying to make them the same size, and it's just random chance that the 1920p one ended up slightly larger.
The file sizes are all very close, so it may be that they're all using the same bitrate and the differences are just encoding variance.
We're having a look to see what's going on with this scene.