I don’t use VRR, but I meet the rest of your criteria Electron apps were the biggest pain pont - I will be typing in discord and there was noticeable lag and letters would disappear until I have several characters beyond them. I worked around this by using discord on their website in a browser tab.
Not sure which update resolved this, but it’s now working as I expect it to, so I think if you choose to use a Nvidia GPU, you should have an okay time. I would just say to consider a beefier AMD GPU as well, since they tend to have much better driver support in Linux