Update documentation

documentation/en/hardware-mining.md

@@ -16,6 +16,8 @@ The setup below is a minimal example for sealing 32 GiB sectors on Lotus:
 
 Note that 1GB sectors don't require as high of specs, but are likely to be removed as we improve the performance of 32GB sector sealing.
 
+AMD CPU's are **highly recommended**, because of the `Intel SHA Extensions` instruction set that is available there since the `Zen` microarchitecture. Hence, AMD CPU's seem to perform much better on the testnet than other CPU's. Contrary to what the name implies, this extended instruction set is not available on recent Intel desktop/server chips. 
+
 ## Testnet discoveries
 
 - If you only have 128GiB of ram, enabling 256GB of **NVMe** swap on an SSD will help you avoid out-of-memory issues while mining.

documentation/en/mining-lotus-seal-worker.md

@@ -68,3 +68,14 @@ Worker 1, host othercomputer
         VMEM: [||||||||||||||                                                  ] 23% 14 GiB/62.7 GiB
         GPU: GeForce RTX 2080, not used
 ```
+
+### Running locally for manually managing process priority
+
+You can also run the **Lotus Seal Worker** on the same machine as your **Lotus Storage Miner**, so you can manually manage the process priority.
+To do so you have to first **disable all seal task types** in the miner config. This is important to prevent conflicts between the two processes.
+
+You can then run the storage miner on your local-loopback interface; 
+
+```sh
+lotus-seal-worker run --address 127.0.0.1:2345
+```