Yeah, remove the overclock and check your temps then, though with such a high idle temperature I'm wondering if you have a mounting issue with your cooler. If you have high ambient temps eg. 40 celsius with no air conditioning that is going to limit how far you can overclock.
A couple of other notes to consider, the 8086K will get quite hot as you approach 1.35V for Vcore and anything above 1.35V typically requires you to delid your CPU and replace the thermal paste inside with a liquid metal compound in order to get temps under control regardless of what cooler you use. Second, for Prime 95 make sure you disable AVX or use version 26.6. AVX workloads under Prime95 put an unrealistically high power load onto the CPU and aren't exactly great indicators of what your temps would be in any real world workload.
Edit: Monitor your Vcore and see what is actually being delivered to your CPU, if you have your LLC set high, you may be overshooting your target voltage and actually be delivering more than 1.35V to the CPU rather than 1.33.