I installed Elementary 7.0, latest Chrome. It works fine. For larger presets, adjusting the sysex buffer size was needed. Let’s continue our communication on the chat.
Edit:
For those of you who use Electra One on Linux. A good way of setting the MIDI buffer sizes is to add the parameter adjustment to the modprobe configuration. There might be slight differences per distro, but in general adding the following line to alsa related config in /etc/modprobe.d/ will do the job:
options snd-seq-midi output_buffer_size=262144
This ensures that the buffer size is set when the alsa modules are loaded, either automatically at the boot time or when loaded manually.
Also, note, this adjustment is needed for the Chrome browser. Chrome seems to dump whole SysEx messages to the MIDI driver, not decent sized chunks of them. It is not much related to the E1 hardware. Other MIDI applications may work just fine without making any changes to the buffer size.