An i5-14500 has a comparable memory bandwidth as an i9-14900k
https://www.intel.com/content/www/us/en/products/compare.htm...
To me memory latency being whatever, 30% higher, ought not to explain the issue here, in part because that's a priori assuming all is memory-bandwidth-limited vs say network limited or CPU limited far as the bottleneck
What makes more sense to me is the software is "slow and clunky" that is maybe a global mutex, maybe poor multithreading sync making it effectively single threaded, with a sprinkling of particularly slow algorithms or syscalls that are realized as a frozen GUI, or as we call such cases, Microsoft standard