GPU usage 50-60% max

Hi, Coming back to MSFS after a while with new computer. 4090 13900k *neither overclosked, 2TB nvme pcie 4.0 32gb ram ddr5. Playing on Ultrawide 72fps 5k2k resolution. All settings to ULTRA, DLSS frame generation on, DX12, DLSS balanced. G-SYNC and V-SYNC on as per recommendations. Prefer maximum performance on.
Normally I get 70fps easy. Over london I get stuttering and drops in the region of 55-60 fps (not a problem with G-sync, but it stutters when it drops). GPU usage is between 30 and 60 %. CPU even lower. Temps absolutely fine. Wattage of GPU 250ish. Limited by Voltage. Normal and expected behaviour or am I missing something?
Thanks!

The figures you see for cpu are aggregated, it in reality will be at 100% on at least one core. DX12 handles this better but either way DLSS is not needed for such a high end gpu, it can only cause an even bigger imbalance.