Tiny interface text
Under Properties for the game, if you set the resolution to 1600x900, and check off "Set resolution for internal and external display," it WILL fullscreen, but the interface text will still be hard to read
bad
Text is way way too small to play normally.
Launching the game in with the "Fullscreen (native)" option caused the game to register the cursor location as about 30 pixel up and left of where it appears making the game difficult to play. Launching the game with the "Play Rift Wizard" option doesn't have this issue.
Everything worked seamlessly, and the game felt native.
Runs great with Proton 5.0-10.
As far as I noticed, there's a tiny crackling that happens only in the menu. Thankfully it didn't happen during gameplay.
Doesn't seem to launch with Proton 5.13-2, the latest version as of the time of this review.