Have you benchmarked the RAID0 against a single drive?
What you gain in sequential performance, you lose in IOPS and access latency.
I'd very much expect your RAID0 setup to be slower in almost all use-cases than a single drive with the sole exception of sequential copying of large datasets into and out of RAM, and I'm saying that as an enterprise storage architect who's dailying two-dozen SSD arrays in servers, enterprise storage appliances from HPE/Pure/EMC as well as more consumer-stuff like homegrown renderfarms, TrueNAS servers, and off-the-peg rackmount solutions from Synology/QNAP.
Like, no matter how fast your CPU is, RAID adds overhead that increases access latency. SSD's biggest strength is the low access latency and high IOPS. I can get tens of GB/s out of spinning rust appliances with enough striping but I'll never get nanosecond access latencies.