Wait until you find a YouTube video in a codec your system can't play. 
Actually, I'm looking for a little better performance in Chromium on low resource machines. A few years ago, I used to be able to open 20-30 tabs in Chromium on this machine, without breaking_a_sweat. Those days are over.
I'm lucky if I can open three 'complex' sites in tabs at the same time, for instance: LinkedIn, Plug.dj, and Soundcloud, without having Chromium lag out and/or the entire system freeze.
Disabling Flash made a noticeable improvement, in this regard...
I've also limited the core file size:
vindsl@Zuul:~$ cat /etc/security/limits.conf
# /etc/security/limits.conf
#
#Each line describes a limit for a user in the form:
#
#<domain> <type> <item> <value>
#
#Where:
#<domain> can be:
# - a user name
# - a group name, with @group syntax
# - the wildcard *, for default entry
# - the wildcard %, can be also used with %group syntax,
# for maxlogin limit
# - NOTE: group and wildcard limits are not applied to root.
# To apply a limit to the root user, <domain> must be
# the literal username root.
#
#<type> can have the two values:
# - "soft" for enforcing the soft limits
# - "hard" for enforcing hard limits
#
#<item> can be one of the following:
# - core - limits the core file size (KB)
# - data - max data size (KB)
# - fsize - maximum filesize (KB)
# - memlock - max locked-in-memory address space (KB)
# - nofile - max number of open files
# - rss - max resident set size (KB)
# - stack - max stack size (KB)
# - cpu - max CPU time (MIN)
# - nproc - max number of processes
# - as - address space limit (KB)
# - maxlogins - max number of logins for this user
# - maxsyslogins - max number of logins on the system
# - priority - the priority to run user process with
# - locks - max number of file locks the user can hold
# - sigpending - max number of pending signals
# - msgqueue - max memory used by POSIX message queues (bytes)
# - nice - max nice priority allowed to raise to values: [-20, 19]
# - rtprio - max realtime priority
# - chroot - change root to directory (Debian-specific)
#
#<domain> <type> <item> <value>
#
* soft core 0
root hard core 1024
#* hard rss 10000
#@student hard nproc 20
#@faculty soft nproc 20
#@faculty hard nproc 50
#ftp hard nproc 0
#ftp - chroot /ftp
#@student - maxlogins 4
# End of file
vindsl@Zuul:~$
vindsl@Zuul:~$ vindsl@Zuul:~$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 7844
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7844
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
vindsl@Zuul:~$
And, tuned the VM:
vindsl@Zuul:~$ sudo sysctl -p
[sudo] password for vindsl:
kernel.shmmax = 100000000
vm.overcommit_memory = 0
vm.overcommit_ratio = 50
vm.dirty_background_ratio = 10
vm.dirty_ratio = 15
vm.swappiness = 10
vindsl@Zuul:~$
Web performance will never be the way it used to be, on ancient iron. Everything has evolved to the point that simply surfing the web has become an arduous task.
Really, I think it's time for Flash to disappear from the face of the planet, like the other dinosaurs...
