With the best workstations the cloud has to offer.
Up to 4k and 60 FPS, run everything as it were natively on the computer, but with much more computing power.
Install your game on a cloud machine, configure your playtest and share your link !
Your playtesters will be able to use their game controllers, their graphic tablets and more !
Everything happens in the browser, just click on a link, and you're playing. No need to share an .exe or install the game.