Technically, whether you select your mouse to use Bluetooth or "Razer HyperSpeed Wireless," it will interfere with every 2.4GHz channel you have access to. That's because those are both non-wifi and spread-spectrum, so will spread packets out throughout the entire frequency band and will cause collisions and retransmits no matter what channel you select.
Some routers have a selectable Bluetooth Coexistence mode which is supposed to allow wifi and Bluetooth to cooperate by negotiating which device can transmit at which times, but Bluetooth mice will simply ignore such requests because that would increase mouse latency.
Bluetooth 3.0 and later with HS can use the Bluetooth to only establish the link and then use wifi to perform the data transfer, which would be better as all wifi stations have to respect wifi rules, but this is normally only done if a high data rate is required and mice generally do not require that.
It can also matter which USB port you plug the receiver into, as USB 3.0/3.1 Gen 1/3.2 Gen 1 operates at 2.5GHz which also interferes with 2.4GHz wifi, so if you only have such ports you'll want to use the most heavily shielded one (like one on the back panel instead of a front one attached via a long wire to a motherboard header, which will radiate RF out any side panel window). USB 2.0 doesn't have this problem, and neither does Superspeed+ 3.1 Gen 2/3.2 Gen 2 which operates at 5GHz so should only interfere with 5GHz wifi.
What can you do with the super limited settings available? You could try a 1/2 packet size Fragmentation Threshold of 824 to start, and perhaps even a 1/3 size 576--if there are a lot of collisions, reducing the packet size both improves the odds a packet will miss a collision and reduces the size of the packet that must be retransmitted if it turns out to be bad. Also, setting Guard interval to Long/800ns is supposed to be more reliable with interference but reduces theoretical data rate from 72.2 to 65Mbps per stream. Or switch to a wired mouse!