My Dell laptop is set up to dual-boot Windows 10 and Linux Mint, although I rarely boot into Windows as all the apps I run, other than tax software which is only used once a year, are available as native Linux apps.
So, when I first decided to investigate 3d CAD my preference was for a native Linux app, which is why my first choice was Freecad, which better yet it is open source of which I am a strong proponent (I develop and maintain an open source application of my own which has a fairly strong following in its niche market).
But, try as I might, and I really wanted to, I just couldn't learn to love Freecad.
Next try was Fusion 360, I had hoped to get it running under Wine - I wasted countless hours following various instructions found online, none of which worked. Not having much success with F360 I signed up for an Atom3D trial, but had no more success getting this to run under Wine.
So, not having much success with Wine, I installed Windows 10 in VM Virtual Box.
Both F360 and Atom3D ran, but were a little flakey with neither being really usable - screen freezes for seconds at a time, partial screen refreshes and occasionally F360 would lock up completely.
Before giving up with virtual machines, I decided to give Windows 10 in VMWare Player a whirl. Player is a commercial product that can be downloaded free for non-commercial use.
F360 was functional, but slow and jerky, occasionally locking up for a few seconds at a time - usable in a pinch but not good enough for regular use.
However, Atom3D worked flawlessly for me, so much so that I bought a licence
I think that It is probably a little slower than running directly under Windows but not enough to really be noticable.
I think people are missing the point, running Linux means everything else runs faster - email, web browsing, word processing, etc. even if Atom3d runs a little slower.
So, if 3d CAD is is just one of many tasks run on a daily basis, then for me, the slight reduction in performance is easily outweighed by the improved performance for everything else. But, if 3D CAD is a primary part of your day, then it probably makes sense to run it directly on Windows.
Clive