Hello,
I used to play D3 a lot on my MBP, at reasonably high details and reasonably high resolution (over 2000 x whatever) with reasonable good performance (~40 FPS).
I recently purchased a 4k monitor that I used by itself (meaning I have external keyboard and mouse and the laptop is closed so only the external screen is used) connected to the Mac through USB-C and the performance is clearly insufficient (gets acceptable at ~1600x1200 with low graphics and even then it is not smooth).
I would understand if the performance were consistent between the two setups, but here the difference is weird.
Any opinion? (except running Windows :D).
https ://d.pr/i/qCvgGB
https ://d.pr/i/xq214V