Yes, accessing Paramount+ from their website via streamfab gives at best 540.
This should be an announcement by now from Streamfab staff.
Also, all Paramount+ issues should be labeled Paramount+
This is in the streamfab update notices from 2025-08-07, and started for many as early as late July.
(NOTE: Due to some upgrade for Paramount+, new videos can only be downloaded in a maximum resolution of 540p. We are still investigating this issue.)
This affects ALL USA access. Also, read this topic and note post 14.
Yes, you can subscribe to Paramount+ via Amazon, but it MIGHT still be a RISK to many because of past notices issued by Amazon.