tmux Memory Usage Seems Large, But Maybe It's Normal?

[PorcelainMouse]

tmux memory usage seem suspicious, to me, but I can't tell if it is normal or not. I've searched for people reporting memory problems and found several old discussions. But, all of those problems were resolved, so I'm not sure what to think. Here are some of my symptoms:

1. tmux uses what seems like a lot of memory. Typically after a few days of uptime, tmux is the largest (persistent) RSS process on my system at upwards of 2 Gib. This is something to be worried about?
2. clear-history is associated with more memory use, not less. For example, today tmux was at 1 Gib, then I ran clear-history on each session--not sure if that is needed--and RSS went UP to 1.4 Gib. (I just changed history-limit to 500, down from 20000 in the config below, but I've tried high and low values, and I don't think it has any effect on this.)
3. tmux RSS grows seemingly without bound. Is that normal?

Here's a little about my environment. I have a bash script that starts four sessions with about 50 panes that I run after rebooting. 15 panes run sys monitoring programs, like top, nvtop, and some watch cmds, plus BOINC tui, torrents, stuff like that. Another five have nvim running. The rest are working shells for a transient programs/cmds. I use gnome-terminal. Wayland. Fedora. nvim complains about color, even though I've tried to fix it many times, FWIW.

tmux version 3.4.

# .tmux.conf
set -g default-terminal "tmux-256color"
set-option -a terminal-features "$tmux-256color:RGB"
set -as terminal-overrides ',*:Smulx=\E[4::%p1%dm'  # undercurl support
set -as terminal-overrides ',*:Setulc=\E[58::2::%p1%{65536}%/%d::%p1%{256}%/%{255}%&%d::%p1%{255}%&%d%;m'  # underscore colours - needs tmux-3.0
set-option -g mode-keys vi
set-option -g focus-events on
set-option -g xterm-keys on
unbind -n C-t
set-option -sg escape-time 2
set-option -g set-titles on
set-option -g set-titles-string '#H:#S.#I.#P #W #T' # window number,program name, active(or not)
set-window-option -g automatic-rename on            # (DEFAULT) automatically update window names
set-window-option -g allow-rename off
set-option -g status-right '' # don't show anything on the right side, more room for windows, conflicts with powerline
set -g base-index 1
set -g history-limit 500
set -g display-time 2000
set -g prefix C-b
bind-key S command-prompt -p ssh: "new-window -n %1 'ssh %1'"
bind-key | split-window -h
bind-key - split-window -v
bind-key k select-pane -U # up
bind-key j select-pane -D # down
bind-key h select-pane -L # left
bind-key l select-pane -R # right
bind-key C-b last-window # go to last screen if I repeat the prefix
bind-key b send-prefix # send the prefix if I repeat b
bind-key a send-prefix # send the prefix if I repeat a
bind-key c new-window -c '#{pane_current_path}'
bind-key - split-window -v -c '#{pane_current_path}'
bind-key | split-window -h -c '#{pane_current_path}'

[PorcelainMouse]

Hmm, wait, do process inherit their children's memory usage? Because I quit some terminal programs and now tmux memory usage dropped way down.