I am trying to find the bottleneck in my ubuntu 18.04's wifi. My router is putting out speeds of ~150mbps but my computer (with a tp-link adapter rated for 150) WAS only showing 25mb in speedtests. Then I made the dumb choice to try to install better adapters. So I followed the tips from this video which basically installs the driver for the adapter I think. But now my speeds are showing more like 10mbps. I'd really appreciate help getting to the bottom of this.

*-network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:06:00.0 logical name: enp6s0 version: 0c serial: e0:d5:5e:dd:39:7c capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp aui bnc mii fibre 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=MII resources: irq:36 ioport:f000(size=256) memory:fe700000-fe700fff memory:f0300000-f0303fff *-network description: Wireless interface physical id: 1 bus info: usb@3:4 logical name: wlx503eaa8c0598 serial: 50:3e:aa:8c:05:98 capabilities: ethernet physical wireless configuration: broadcast=yes driver=r8188eu ip=192.168.86.63 multicast=yes wireless=IEEE 802.11bgn