Preamble - I installed Fallout 4 GOTY from GOG on an SSD, disabled cloud saves, and then installed Fallout: London over it as per the launcher. I've played for half a dozen hours with no crashes thus far. R7 5800X, 32GB DDR4-3200, RTX 3080 12GB. Positives - amazing voice work, generous level of detail on many objects, feels like a fully-realized other part of the world that's different from MURICA. Feels like playing a fresh Fallout game. Negatives - Significant loading times (30s or more going through a door), much lower performance than vanilla FO4 (likely due to the upgraded level of detail). Suggestion - perhaps a mention at setup in GOG Galaxy to run the FO4 launcher and set up display settings prior to running Fallout London. The introduction scene probably would have had way more impact if it wasn't defaulted to potato settings at 720p. Also, I swear if I even think too hard about the river I get an instant lethal dose of radiation. Just wow. Overall, I'm hooked and considering calling in sick to work to play more of this!
