Screenshots are lower quality and seem blurrier since latest beta update

[please-be-nice]

Your system information

• Steam client version: 1787790984
• SteamOS version: 3.9.0
• Opted into Steam client beta?: YES
• Opted into SteamOS beta?: NO
• Have you checked for updates in Settings > System?: YES

Please describe your issue in as much detail as possible:

Took screenshot in game. Expected quality to be the same as previous screenshots, but it was noticeably blurrier/lower res

Steps for reproducing this issue:

1. Take screenshot
2. Look at screenshot