The issue is seen Server Side (Client side is unkown).

Setup:
Multiple Redstone wires triggered by RsTimer

Result:
Very high server load (47,7% at 70ms Tick time)
Very Very large Stack, with more Wires a Stackoverflow is not impossible

Ticking at 1s:

Another Problem case, with very high load:
(Ticking at 1s)

*Inside the selected Line, the same long recursive chain

about the stacktrace: this is how redstone work, I can not edit how things are done. Also about the second priflling: I only see vanillas inefficient redstone wires, needing way too much time.