My main issue with Zen5 and ARL will be how much more power a 5090 will be over a 4090. If that delta is similar going from a 3090 to a 4090, then both cpu platforms will be a bottleneck for high hz gaming at 1440p UW which is disappointing.
Its hard to say yet. A lot depends on the power limits as to how these CPU’s will perform. The cooling solution and power use of the 5090 will likely be a significant factor too.