Newer versions of AME are optimized for the latest hardware but can be resource-heavy. The 2019 version runs smoothly on older workstations and laptops without hogging your RAM.
By this build, most of the bugs introduced in the initial 2019 launch were squashed, making it a favorite for long, overnight render queues.
For many, the 2019 era of Adobe software was a "Golden Age" of performance. Version 13.1.5.35 was one of the final, most polished iterations of that cycle.