The game has a pretty friendly and active community. The best way to get involved in the community is to check out the discord: https://discord.gg/RnsPtE

Earlier this year a new glitch was found that saves about 10 seconds. The WR holder just got a new record a couple weeks ago, and is still grinding to save even more time. Lots of small optimizations are being found frequently to save a handful of frames here and there. The community is definitely active and people are constantly exploring new ideas and grinding out new personal bests.