A:AnswerVRAM is in the graphics card only it’s not upgradable. You install a 16gb stick of RAM. The performance went down because it is best to use two sticks of ram from the same manufacturer not from different manufacturers. Buy two of the exact same sticks of 16gb ram will fix your problem!
A:AnswerYou can use an external monitor to run as high of a refresh rate as you like. The issue is getting there. You will not be playing cyberpunk or other AAA titles on any laptop at 300 fps on any kind of high, ultra or max settings. To hit higher FPS you will likely have to reduce graphical settings significantly. Some will not find value in that trade off. I find running many games at max around 120-144hz is plenty because the graphics are still up high.
A:AnswerAcer has not tested any Linux version on the Windows devices. Secure boot can be enabled/disabled in the BIOS settings under the Boot tab. For the Linux questions you might post your question on the Acer Community where there are many users that post questions and offer help and advice on Acer products. The link is: https://community.acer.com/
