What is the reason for the poor performance of the Droplet in DigitalOcean?

Question

Java

Good time of the day! Created a Droplet in Digital Ocean with 1GB RAM, 20GB HDD and 2TB bandwidth. OS - Debian 8.9 x32. Droplet in Frankfurt. Picked up a tomcat on this droplet. The problem lies in the low loading speed of even the main page of Tomcat. Here is the tomcat service script (tomcat.service):

[Unit]
Description=Tomcat9
After=network.target

[Service]
Type=forking

Environment=CATALINA_PID=/opt/tomcat/tomcat9.pid
Environment=JAVA_HOME=/usr/lib/jvm/java-8-oracle
Environment=CATALINA_HOME=/opt/tomcat
Environment=CATALINA_BASE=/opt/tomcat
Environment="CATALINA_OPTS=-Xms512m -Xmx512m"
Environment="JAVA_OPTS=-Dfile.encoding=UTF-8 -Dnet.sf.ehcache.skipUpdateCheck=t$
ExecStart=/opt/tomcat/bin/startup.sh
ExecStop=/opt/tomcat/bin/shutdown.sh

[Install]
WantedBy=multi-user.target

What could be the problem with the performance of tomcat and droplet?