Not at all. I run lemmy.pt on a $5 Vultr VPS alongside some other small things. The VPS has been sitting at roughly 350/400MiB of RAM, and essentially never above 5% in the CPU.
Lemmy uses less than 30MiB, PostgreSQL about 60/70 and pict-rs roughly 60.
The instance is small, but I don’t believe it will go beyond the system’s resources until it’s actually rather big, at which point it is likely I will have some financial support (many members have already expressed their availability to help out), so upgrading to a $10 plan shouldn’t be hard.
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