Well that’s my main issue, my rig runs an i5-6900 and I have 16GB RAM. I gave 6 to the Linux VM, and try to maintain the usage on Windows as low as possible : not having the browser running on both, a plug-in to put to sleep tabs not used, stopping processes I’m not using. KDE is a bit too much in my case, but Cinnamon, or XFCE are working fine. I’ve found a new love with i3wm but it needs some time to tinker it to your taste.
But if you have a more recent computer, you should be fine. Upgrade the RAM maybe, if you find it to slow.
My knee hurts when it’s raining.